84 lines
1.4 KiB
Markdown
84 lines
1.4 KiB
Markdown
Tag {set}
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=========
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The tag {set} is used for assigning template variables during the execution of a template.
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```smarty
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{set $var=EXPR}
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```
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```smarty
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{set $var}
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... any content ...
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{/set}
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```
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```smarty
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{set $var|modifiers}
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... any content ...
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{/set}
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```
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Variable names follow the same rules as other labels in PHP.
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A valid variable name starts with a letter or underscore, followed by any number of letters, numbers, or underscores.
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```smarty
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{set $v = 5}
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{set $v = "value"}
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{set $v = $x+$y}
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{set $v = 4}
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{set $v = $z++ + 1}
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{set $v = --$z}
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{set $v = $y/$x}
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{set $v = $y-$x}
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{set $v = $y*$x-2}
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{set $v = ($y^$x)+7}
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```
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Works this array too
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```smarty
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{set $v = [1,2,3]}
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{set $v = []}
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{set $v = ["one"|upper => 1, 4 => $x, "three" => 3]}
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{set $v = ["key1" => $y*$x-2, "key2" => ["z" => $z]]}
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```
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Getting function result into variable
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```smarty
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{set $v = count([1,2,3])+7}
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```
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Fetch the output of the template into variable
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```smarty
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{set $v}
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Some long {$text|trim}
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{/set}
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{set $v|escape} {* apply modifier to variable*}
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Some long {$text|trim}
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{/set}
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```
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### {add}
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The tag {add} the same tag as {set} except that sets the value of the variable if it does not exist.
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```smarty
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{add $var = 'value'}
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```
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instead of
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```smarty
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{if $var is not set}
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{set $var = 'value'}
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{/if}
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```
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### {var}
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Old name of tag {set}. Currently tag {var} the same tag as {set}. |